Twenty elementary and progressive vocalises : (with Italian words): for alto, op. 15

MLA

Marchesi, Salvatore, and George L Osgood. Twenty Elementary and Progressive Vocalises : (with Italian Words): for Alto, Op. 15. München: Schirmer, 1967.

APA

Marchesi, S., & Osgood, G. L. (1967). Twenty elementary and progressive vocalises : (with Italian words): for alto, op. 15. München: Schirmer.

Chicago

Marchesi, Salvatore, Twenty Elementary and Progressive Vocalises: (with Italian Words): for Alto, Op. 15. Translated by George L. Osgood. München: Schirmer, 1967.